Eric Dumazet 985f2772ee net: mangle zero checksum in skb_checksum_help() ...

commit 4f2e4ad56a65f3b7d64c258e373cb71e8d2499f4 upstream.

Sending zero checksum is ok for TCP, but not for UDP.

UDPv6 receiver should by default drop a frame with a 0 checksum,
and UDPv4 would not verify the checksum and might accept a corrupted
packet.

Simply replace such checksum by 0xffff, regardless of transport.

This error was caught on SIT tunnels, but seems generic.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Maciej Żenczykowski <maze@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Acked-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>

2017-02-10 11:03:54 +01:00

..

datagram.c

net: Fix skb_set_peeked use-after-free bug

2015-10-01 12:07:36 +02:00

dev_addr_lists.c

…

dev_ioctl.c

…

dev.c

net: mangle zero checksum in skb_checksum_help()

2017-02-10 11:03:54 +01:00

drop_monitor.c

…

dst.c

net: ratelimit warnings about dst entry refcount underflow or overflow

2017-02-10 11:03:47 +01:00

ethtool.c

ethtool: Use kcalloc instead of kmalloc for ethtool_get_strings

2015-10-27 09:44:49 +09:00

fib_rules.c

fib_rules: Fix dump_rules() not to exit early

2015-10-22 14:37:53 -07:00

filter.c

tcp: take care of truncations done by sk_filter()

2017-02-10 11:03:46 +01:00

flow_dissector.c

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flow.c

…

gen_estimator.c

…

gen_stats.c

gen_stats.c: Duplicate xstats buffer for later use

2015-03-18 13:22:26 +01:00

iovec.c

iovec: make sure the caller actually wants anything in memcpy_fromiovecend

2014-08-14 09:24:15 +08:00

link_watch.c

…

Makefile

…

neighbour.c

…

net_namespace.c

…

net-procfs.c

…

net-sysfs.c

…

net-sysfs.h

…

net-traces.c

…

netevent.c

…

netpoll.c

…

netprio_cgroup.c

…

pktgen.c

net: pktgen: fix race between pktgen_thread_worker() and kthread_stop()

2015-10-01 12:07:35 +02:00

request_sock.c

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rtnetlink.c

net: fix infoleak in rtnetlink

2016-06-07 10:42:54 +02:00

scm.c

unix: correctly track in-flight fds in sending process user_struct

2016-03-03 15:06:20 -08:00

secure_seq.c

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skbuff.c

skbuff: Fix skb checksum partial check.

2015-10-27 09:44:48 +09:00

sock_diag.c

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sock.c

net: clear sk_err_soft in sk_clone_lock()

2017-02-10 11:03:53 +01:00

stream.c

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sysctl_net_core.c

net: sysctl_net_core: check SNDBUF and RCVBUF for min length

2015-03-26 15:00:55 +01:00

timestamping.c

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user_dma.c

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utils.c

…